10 FARMERS’ BULLETIN 152. 
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In the southern portion of the country several wasplike enemies 
are always present, one of the most effective of these being a small, 
Fic. 7.—Chelonus teranus, a parasite of the fall army worm. Greatly enlarged. 
(Original. ) 
K black creature (fig. 7) which 
lays its eggs in the egg de- 
posited by the fall army 
worm moth. Strange to say, 
instead of destroying this egg 
the young parasite remains 
inactive until the caterpillar 
has hatched and is partly 
grown, whereupon it devours 
the inside portions of the cat- 
erpillar’s body,killing the pest. 
Other valuable and effec- 
tive insect enemies belong to 
a family of two-winged flies, 
not distantly related to that 
detested pest, the house fly. 
Some of these (see fig. 8) de- 
_ posit their eggs on the bodies 
Fig. 8.—Winthemia quadripustulata, a fly para- of the caterpillars, and the re- 
sitic on the fall army worm: Adult. Much en- 2 
larged. (Walton.) sultant maggots bore into the 
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